Nut runner



FIG. 1 is a right side perspective view showing our design for a nut runner;

FIG. 2 is a top plan view thereof;

FIG. 3 is a side view thereof;

FIG. 4 is a rear view thereof;

FIG. 5 is a front view thereof; and,

FIG. 6 is a bottom plan view thereof.

The broken lines showing environment in the drawings are for illustrative purposes only and form no part of the claimed design. 

The ornamental design for a nut runner, as shown and described. 